Children's health
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Achalasia
In this condition, the muscles in the esophagus don't relax, preventing food and drink from moving into the stomach. Learn more about this rare digestive disorder.
Acetyl-L-carnitine: Can it relieve MS fatigue?
Some research suggests that acetyl-L-carnitine may improve fatigue associated with multiple sclerosis, but more study is needed.
Acetaminophen and children: Why dose matters
This medicine is an effective pain reliever, but an overdose can happen all too easily. Follow these tips to keep your child safe.
Acanthosis nigricans
Learn about the causes of and treatment for this condition that causes dark, velvety patches in folds of the skin.
Abnormal sperm morphology: What does it mean?
Abnormal sperm morphology may be a contributing factor in male infertility.
Abdominal ultrasound
An ultrasound of the abdomen is the preferred test to screen for an aortic aneurysm. But it may be done for other health reasons, too. Learn why.
Abdominal pain
Everyone experiences abdominal pain from time to time. Find out when it might be cause for concern.
Abdominal hysterectomy
Learn why surgery to remove the uterus, known as a hysterectomy, might be done and what to expect if you need this surgery.
Abdominal aortic aneurysm
An aneurysm in the lower part of the aorta can grow slowly and silently. Know the symptoms of this dangerous condition and the treatment.
AV node ablation
Learn who may benefit from this cardiac catheter procedure to correct persistent atrial fibrillation, or AFib.
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